Locomotive-boiler.



N0. 7|6,60U. Patented D86. 23, |902.

W. B. WARREN.

LOCUMOTWE BOILEH.

(Applicatiox'x led Apr. 4, 1902.) (no Model.)

ma caws evans co. muro-uvm., wAsmnsmN. o4 c UNitn STATES Ormea.

WILLIAM B. VARREN, OF ST. LOUIS, MISSOURI.

SPECIFICATION forming part of Letters Patent No. 716,600, dated December 23, 1902.

Application filed April 4, 1902. Serial No. 101,362. (No model.)

To all whom, it may concern:

Be it known that I, WILLIAM B. WARREN, a citizen of the United States, residing in the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Locomotive-Boilers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this speciication.

My invention relates to a dry-pipe system, whereby dry steam is delivered from a locomotive-boiler to the locomotive-cylinders.

The invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a longitudinal section of a locomotive-boiler equipped with my invention. Fig. II is an enlarged detail vertical section taken on line II II, Fig. I. Fig. III is an enlarged horizontal section taken ou line III III, Fig. I.

l designates a locomotive-boiler containing the usual tubes 2.

3 and 4 designate a series of steam-domes that surmount the boilerl and have communication therewith.

5 is a steam-receiving pipe open to communication with the upper part of the steamdome 3 to receive dry steam, and 6 represents steam-receiving pipes open to communication with the upper part of the steam-domes 4 to receive dry steam.

7 is a steam-box to which all of the pipes 5 and 6 lead to deliver dry steam thereinto from the domes 3 and 4:, and S is a neck extending into said box and provided with apertures 9 for the passage of steam therethrough from said box from above and below the neck.

10 designates a pipe-leg having its upper end seated in the neck 8 of the steam-box 7 and provided with upper and lower ports that register with the respective apertures 9 in the neck S.

ll is a steam-conducting pipe that leads from the pipe-leg l0 to the exterior of the boiler l and through which the steam passes to be delivered to the locomotive-cylinders.

l2 is a double throttle-valve positioned in the upper end of the pipe-leg lO within the steam-box 7 and adapted to control both the upper and lower ports therein. This throttle-valve is operated by any suitable means,

such as the bell-crank 13, that is connected to the stem of said valve and receives the connection of an operating-rod 14:.

It will be seen from the foregoing that the dry steam that rises into the domes 3 and 4 is constantly delivered from all the domes into the single steam-box 7 for delivery therefrom and that upon the actuation of the throttlevalve l2 to open the ports in the neck of the pipe-leg 10 the accumulated steam escapes freely from said box into said pipe-leg, from which it passes directly into and through the conducting-pipe 1l.

The advantages incident to my invention are as follows: A more equal withdrawal of steam from different points of the boiler is derived than in the dry-steam systems heretofore in use, and therefore less suction is present at any point of the boiler and less priming and foaming are necessary and occasioned, thereby providing for the delivery of drier steam from the boiler. By reason of the advantageous features mentioned it is possible to obtain greater service from the locomotiveboiler and accomplish greater mileage of travel in its use between periodical cleansing of the boiler, thus providing material saving of time and causing less trouble and annoyance from leaky boilers and breakage of staybolts incident to frequent Washing out of the locomotive-boiler.

I claim as my inventionl. The combination with a locomotiveboiler, of a series of steam-domes surmounting the boiler, a steam-box located entirely within one of said domes and having communication with each of said domes, a steamconducting pipe leading from said steam-box and having communication therewith, and a throttle-valve arranged to control the passage of steam from said box to said conductingpipe, substantially as described.

2. The combination with a locomotiveboiler, of a series of steam-domes surmounting the boiler, a steam-box located entirely within one of said domes, steam-receiving pipes open to communication with the interior of each of said domes and leading to said steam-box, a steam-conducting pipe leading from said steam-box and having communication therewith, and a throttle-valve arranged to control the passage of steam from said box IOO and having ports providing communication from said box into said leg through the upper and lower apertures, a throttle-Valve arranged no control said ports, and a steamconducting pipe connected to said pipe-leg, substantially as described.

WILLIAM B. WARREN. In presence of- E. S. KNIGHT, M. P. SMITH. 

